For a non diabetic person, is a blood glucose level of 108 from the finger tip normal after eating a snack an hour prior to the measurement ? the snack was french fries?

Glucometer readings are generally lower than plasma glucose test done in a lab. If you have any concern, get your fasting plasma glucose tested at an accredited laboratory. Your doctor and order a test. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.